Telephone switchboard housing



FIG. 1 is a perspective view of a telephone switchboard housing, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image of the side shown.

The undisclosed rear portions of the switchboard housing are plain and unornamented. 

The ornamental design for a telephone switchboard housing, as shown and described. 